Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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How do I graph equations like x^2 + y^2 = 9 on my TI84 Plus silver calculator?

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This is the equation of a circle centered on (0,0) and with radius r=3. You can draw it as a conic section.For that you will need the conics application. Look for it on education.ti.com
You can also draw it as two branches: y1=+ square root (9-x^2) and y2=-square root(9-x^2). The two parts may not overlap at the points on the the x-axis, but if you are willing to accept the calculator limitations you will have your graph.

Posted on May 22, 2011

Testimonial: "Solved my problem very well."

  • k24674 May 22, 2011

    If you are just interested in having a circle drawn, use the DRAW application. It has a command DrawCircle. Give it the center and the radius. The Draw application is accessed by pressing 2nd PRGM.

  • dv_bragg May 22, 2011

    Thanks for the help. It was really useful, and now I have my math problem fixed. Thanks again!

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2 cc = how many mg

Posted on May 23, 2011

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1 Answer

How do i graph an equation on a ti-84 plus silver edition calculator?


1. To graph a function, Press [Y=] to enter the function editor.
2. Type in a legitimate function.
3. Press ENTER to validate the function.
4. Press the GRAPH key to draw the graph.
5. Play with the window dimensions or use the ZOOM feature
to see more of the graph (or less).


Try your settings by drawing the function y= x
If you have problem with Invalid Dimension or other errors, turn the
Statistical Plots OFF.
To do so, press [SHIFT] [Y=] to open the Stat Plots.
Type in the number to the left of the Option PlotsOff. Then press ENTER.

Sep 20, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

My TI 84 plus silver: whenever I push the graph button the message ERR: Syntax 1:quit 2: goto appear on screen please help


Press the Y= button.

There are several possibilities:

1) Scroll through all equations, Y1 through Y9 and Y0. Make sure they are cleared.
2) The equation you typed in is not entered correctly.
3) Make sure Plot 1, Plot 2, and Plot 3 are NOT highlighted.

Feb 01, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

My TI-84 Plus Silver Edition Graphing Calculator continues to read "ERR: INVALID DIM" whenever I attempt to graph equations.


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Dec 04, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

The calculator doesnt graph two equation on the graph


The Transfrm application for dynamic geometry is probably active in memory. You must purge it from RAM
  1. Press APPS
  2. Scroll Up or Down (Up is faster) to find Transfm.
  3. Select it and press ENTER
  4. Press the number corresponding to the option Uninstall.
  5. Once the APP is kicked out of memory you will be able to draw multiple functions.

May 10, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

How would you enter the following equation to graph on a TI-84 Plus Silver Edition calculator? 2 <= t <= 9


Hello,
To enter the inequation you split it into two inequalities
9919eed.jpg
Graph is as follows
45078e2.jpg
Use [2nd][CATALOG] to access the relaional operators less than or equal, greater than or equal, and the operator AND.
To access the inequality signs scroll upwards from abs( to reach the bottom of the catalog.
Note: You can use t as variable only in parametric graphs. Use x.
Hope it helps.

Oct 19, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

How to graph 2 lines at once


ok well go to the 'y=' button
type in the equation and make sure that the equals sign after y has like a black box around it, making the actual = white. so make sure both of those = signs of the 2 equations that you want to graph are like that, and thats about it.

Jun 19, 2009 | Texas Instruments TI-84 Plus Silver...

2 Answers

Inequality help for a ti-84 plus silver


In the Y= editor press Left to highlight the = sign, then press ENTER to cycle through the plot styles. Your choices are Line, Thick Above, Below, Path, Animate, and Dot.

Apr 01, 2009 | Texas Instruments TI-84 Plus Calculator

2 Answers

Graphing


The first solution will allow you to watch your calculator graph two equations simultaneously rather than finishing one before graphing the next; it won't solve the problem of having the calculator unselect one equation when you select a second. To fix that problem, try the following:


In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.
  • Press [APPS] key
  • Select Transfrm from the menu
  • Press 1:Uninstall
The illustration and solution are courtesy of Jesse Phillips, who cites this page from the Texas Instruments support site

- doug garfinkel, Children's Day School

Jan 15, 2008 | Texas Instruments TI-84 Plus Silver...

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